Patent SG-11201809914Y-A (SG)
Title: High temperature viscoelastic surfactant (ves) fluids comprising polymeric viscosity modifiers
Inventor: LI LEIMING
IPC: E21B43/26
Filed: 2017-05-05
Abstract: INTERNATIONAL APPLICATION PUBLISHED UNDER THE PATENT COOPERATION TREATY (PCT) (19) World Intellectual Property 11111111111111111111111111111111111111111111111111111111111111111111111111111111 Organization International Bureau (10) International Publication Number (43) International Publication Date .....0\"\" WO 2017/196648 Al 16 November 2017 (16.11.2017) WIPO I PCT (51) International Patent Classification: PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, C09K 8/68 (2006.01) E21B 43/26 (2006.01) SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, (21) International Application Number: TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW. PCT/US2017/031201 (84) Designated States (unless otherwise indicated, for every (22) International Filing Date: kind of regional protection available): ARIPO (BW, GH, 05 May 2017 (05.05.2017) GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW), Eurasian (AM, AZ, BY, KG, KZ, RU, TJ, (25) Filing Language: English TM), European (AL, AT, BE, BG, CH, CY, CZ, DE, DK, (26) Publication Language: English EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, (30) Priority Data: TR), OAPI (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, 62/335,363 12 May 2016 (12.05.2016) US KM, ML, MR, NE, SN, TD, TG). (71) Applicant: SAUDI ARABIAN OIL COMPANY Declarations under Rule 4.17: [SA/SA]; Post Office Box 5000, Dharan, 31311 (SA). — as to applicant's entitlement to apply for and be granted a (71) Applicant (for AG only): ARAMCO SERVICES COM- patent (Rule 4.17(ii)) PANY [US/US]; 9009 West Loop South, Houston, Texas — as to the applicant's entitlement to claim the priority of the 77096 (US). earlier application (Rule 4.17(iii)) (72) Inventors: LI, Leiming; c/o Aramco Services Compa- Published: ny, 9009 West Loop South, Houston, Texas 77096 (US). — with international search report (Art. 21(3)) OZDEN, Sehmus; c/o Aramco Services Company, 9009 West Loop South, Houston, Texas 77096 (US). AL- MUNTASHERI, Ghaithan; c/o Aramco Services Compa- ny, 9009 West Loop South, Houston, Texas 77096 (US). LIANG, Feng; c/o Aramco Services Company, 9009 West Loop South, Houston, Texas 77096 (US). REDDY, B. Raghava; c/o Aramco Services Company, 9009 West Loop South, Houston, Texas 77096 (US). Agent: LUNN, Jennifer H. et al.; Dinsmore & Shohl LLP, One South Main Street, Fifth Third Center - Suite 1500, Dayton, Ohio 45402 (US). (74) — Designated States (unless otherwise indicated, for every kind of national protection available): AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DJ, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JP, KE, KG, KH, KN, KP, KR, KW, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, (81) = (54) Title: HIGH TEMPERATURE VISCOELASTIC SURFACTANT (VES) FLUIDS COMPRISING POLYMERIC VISCOSITY MODIFIERS (57) : In accordance with one or more embodiments, this disclo- 1-1 0 R 2 R 4 sure describes a viscoelastic surfactant fluid for a subterranean formation R 1 N IH -(CH2)k-W-(CH26-C 1 -(CH2)n-S03\" (I) comprising: brine solution; at least one polyacrylamide viscosity modifi- GC I H er with a weight averaged molecular weight (Mw) from 250,000 g/mol V; 7r R3 to 40,000,000 g/mol; and a viscoelastic surfactant according to formula (I): where R1 is a saturated or unsaturated hydrocarbon group of from 17 01 to 29 carbon atoms, R2 and R3 are each independently selected from a 1-1 t-- 1-1 straight chain or branched alkyl or hydroxyalkyl group of from 1 to 6 car- bon atoms; R4 is selected from H, hydroxyl, alkyl or hydroxyalkyl groups 0 of from 1 to 4 carbon atoms; k is an integer of from 2-20; m is an integer ei of from 1-20; and n is an integer of from 0-20. C